Conveyer for mill products



(No Model.)

R. CRAIK.

OO-N-VE-YERIFOR MILL PRODUCTS. N0. 275,153. Patented Apr. 3,1883.

IIHIIIIIH UNITED STATES ATENT- QFFTQE.

ROBERT ORAIK, OF HAWLEY, MINNESOTA.

CONVEYER FOR MILLPRODUCTS.

SPECIFICATION forming part of Letters Patent No. 275,153, dated April 3, 1883,

Application filed December 20, 1852. (No model.)

To all whom it may concern Be it known that I, ROBERT CRAIK, a citizen of Great Britain, residing at Hawley, in the county of Clay and State of Minnesota, have invented new and useful Improvements in Conveyers for Mill Products, of which the following is a specification.

This invention relates to conveyers for mill products, the apparatus being especially designed for use in flour and other mills, though also adapted for use in other situations.

The object of the invention is to facilitate the conveyance of grain, flour, bran, or other material to any partof a mill or warehouse, especially in narrow or confined situations, where there would notbe room for an ordinary troughconveyer, or where its dust and dirt would be objectionable; and, further, to provide a conveyer which is perfectly dust-proof and capable of being conveniently adjusted into the desired position or detached with ease when desired. These objects I accomplish by the construction of parts hereinafter described and claimed, and illustrated in the accompanying drawings, in which Figure lis a side elevation of my improved conveyer in position, and showing the same partly broken away. Fig. 2 is an end view of one of the end supporting-brackets. Fig. Sis a similar view of one of the central brackets, and Fig. 4 is a side elevation of a modified construction of casing, and Fig. 5 is an end viewof the same.

Likeletters of reference designate like parts.

The apparatus consists of a conveyor-shaft provided at one end with a driving-pulley or other means of rotation, and carrying a continuous conveyer-flight composed of any suitable material, said conveyer-flight being inclosed in a suitable tight casing having inlet and outlet openings for the passage of material without permitting the entrance or escape of dust, and the whole being formed in detachable sections supported by means of suitable brackets.

Referring to the first three figures of the drawings, the letter A designates a drivingpulley, that may be affixed to one end of the conveyor-shaft B, which has its hearings in brackets that are capable of being secured to the walls, ceilings, or other parts of a building.

The brackets O for the ends of the sectional case are provided with bearings c for the ends of the couveyer-shaf t, and with aperipheral flange, c, which fits over the ends of the case. The bracket C, however, while having an annular flange or band, is provided with an opening, within which a bearing, provided for the conveyershaft, is somewhat different from that found in the bracket 0. This bearing 0 consists of a ring connected by radial arms with the band, said ring and bands being in the nature of a spiderfixed within the bracket. One or both of these arms should be vertically arranged, and a hole (shown in dotted lines) will be drllled through the annular band G and through the upper vertical arm, so that oil can be fed to the shaft. The opening in the bracket allows the material to pass by the bearing. It will of course be understood that the flight on the shaft will be omitted at the point where the shaft passes through the bearing.

The com'eyer-shaft B may be composed of wood or metal,and is provided with one or more screw or spiral conveyor-flights, D, of suitable construction. The conveyer-shat't B and screw D are inclosed in atight casing, E, that is preferably cylindricalin form and made in sectional lengths t. at are supported by flanges formed on the brackets (J and O.

In Fig. 1 are shown two of these sections, one being provided with a hopper or inlet, E, and the other having a discharge-spout, G. It is obvious, however, that the conveyer may be made of any desiredlength by using additional sections arranged between the two end sections, that are provided, respectively, with an inlet and outlet,as described. If desired,each section ot'the conveyer, when composed ofseveral sections, maybe provided with an inlet and an outlet suitably valved, so that material may be received and discharged at any point without rearranging the conveyer.

The hopper F is arranged at the upper side of the conveyer-section, and is supported in a clamp, H, havinga bolt, a, byloosening which the clamp and attached hopper may be adj usted to any desired position. The dischargespout G, arranged at the lower sideof the conveycr, is also supported in a similar manner, its clamp or support I being provided with a bolt, b, so that the clamp and spout will be capable of adjustment. The cylindrical casing E is preferablymade of galvanized iron; but other material may be used, if desired.

It will be seen that by the use of this con veyer the access, as well as the escape of dust or dirt, is effectually prevented. The conveyer occupies only about one-fourth the space of an ordinary conveyer, and weighs proportionately less. It never chokes or clogs, as it will take in no more material than it can carry, and,being made in sectional lengths, each complete in itself, it can be quickly joined and set up to any desired length.

Among some other advantages may be mentioned the fact that by my improved conveyer the material received directly from the millstones or rollers is cooled as it is carried along through the casing; also this construction of conveyer affords no harbor for vermin.

Referring now to Figs. 4 and 5, it will be seen that I can also make the casing troughshaped or semi-cylindrical and provide it with flanges along its edges, which said flanges are secured in any suitable way to wooden strips or bars L, adapted to run the entire length of the case. In this instance the same construction of brackets hereinbet'ore described will be employed. In these said figures the caseis provided with openings J, for allowing the maierial to be discharged, and further provided with slides K, by means of which said openings can be closed. These slides have edges fitted in cleats M, which are secured to the case, whereby the slides are guided and held on the case.

Having thus described my invention, what I claim isl. The combination of a tightly-closed cylindrical casin g consisting of sections detachably connected at their adjoining ends, and an interior spiral conveyer and conveyer-shaft, substantially as described.

2. The combination, with a cylindrical conveyer-casing, of an adjustable hopper, substantially as described.

3. The combination, with a conveyer-casing, of a hopper, a clamp, and means for adjusting and securing the same, substantially as described.

4. The combination, with a casing, of an adjustable discharge-spout, substantially as described.

5. The combination, with a conveyer-casing, of a discharge-spout, and means for adjustably securing the same, substantially as described.

6. The combination, with a cylindrical conveyer-casing formed in detachable sections, of one or more adjustable hoppers and dischargespouts, substantially as described.

7. The combination, with a conveyer-shaft and a spiral conveyer, of a tight cylindrical casing formed in detachable sections and provided with adjustable hoppers and dischargespouts, substantially as described.

8. The combination of a conveyershaft, a spiral conveyer mounted thereon, a tight cylindrical casing provided with adjustable hoppers and discharge-spouts, brackets for supporting said casing and affording bearings, and means for rotating said shaft, substantially as described.

In testimony whereof Ihave hereunto set my hand in the presence of two subscribing witnesses.

ROBERT ORAIK.

\Vitnesses:

G. B. TINELL, J. M. UNDERWOOD. 

